Grate



W. J. RATEKIN.

.GRATE.

APPLICATION FILED JULY 23.1919.

1,329,629. Patented Feb. 3, 5.920

jg i

Chroma UNITED STATE$ PATENT OFFICE.

WILLIAM J. RATEIKIN, OF (LAKES, NORTH DAKOTA.

GRATE.

Application filed July 1919.

To all whom it may concern Be it known that I, WVILLIAM J. RA'rnnIN, acitizen of the United States, residing at (lakes, in the county ofDickey and State of North Dakota, have invented certain new and usefulImprovements in Grates, of which the following is a specification,reference being had to the accompanying draw ings.

This invention relates to certain improvements in grates, and it is anobject of the invention to provide a novel and improved device of thisgeneral character provided with means whereby air is distributed withinthe fire-bed in a manner whereby an effective combustion is created.

It is also an objeqt of the invention to provide a novel and improvedgrate of this general character provided with air feeding means wherebythe grate is particularly adapted for use in connection with lignite orkindred fuel.

The invention consists in the details of construction and in thecombination and arrangement of the several arts of my im proved gratewhereby certain important ad vantages are attained and the devicerendered simpler, less expensive and otherwise more convenient andadvantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitelyclaimed.

In order that my invention may be the better understood, I will nowproceed to describe the same with reference to the accompanyingdrawings, wherein:

Figure l is a view in top plan with portions broken away of a grateconstructed in accordance with an embodiment of my in vention.

Fig. 2 is a sectional view taken substantially on the line 2-2 of Fig.1.

Fig. 3 is a sectional view taken substan tially on the line 33 of Fig. 1with the coacting fire-pot also shown in fragment.

As herein embodied, my improved grate comprises a plate P adapted to besuitably supported within the fire-pot F of a stove or furnace and whichplate is herein disclosed with a pair of diametrically opposed openings1 arranged adjacent the periphery of the plate P. The openings 1 providefor an updraft and also to facilitate cleaning out of the fire-pot.

P denotes a second plate overlying the] plate P and rotatably supportedby the plate Specification of Letters Patent.

Patented Feb. 3, 1920.

Serial No. 312,828.

P at substantially the axial center thereof. The plate P is elongatedwith its extremities of a configuration to substantially close theopenings 1 when the plate P is in its normal or one position. An end ofthe plate P is provided with an outstanding arm 2 adapted to be engagedby a suitable implement for imparting the requisite rotation to theplate P when it is desired to uncover the openings 1 and particularlyfor the purpose of cleaning out the fire-pot F. In order to completelyuncover the openings 1 the plate P is moved or rocked to substantially90 degrees and for which reason the longitudinal marginal portions ofsaid plate P are provided with the recesses or cut out portions & sothat when the plate P is in its second position said plate will oifer noobstruction to the openings 1 in the plate P.

The plate P in each of its end portions is provided with a pair oftransversely spaced openings 5 which when the plate P is in its normalposition, are substantially in communication with the openings 1 so thatthe updraft through the openings 1 will also pass through the openings5. Each of the openings 5 is defined by an upstanding flange 6 adaptedto snugly fit within a rabbet formed in an end of the member Msubstantiallv in the form of an inverted U. A mcmber M coacts with eachpair of longitudinally spaced openings 5 and the central or intermediateportion 7 of said member is provided in its lower and side portions withthe restricted ports or openings 8 with the ports 8 in the side beinginclined in a direction toward the plate P. The side portions or legs 9of the member M are also provided with restricted ports 10 inclined in adirection toward the plate P. The draft passing upwardly through theopenings 1 and through the members M is, through the in struinentalityof the ports 8 and 10. distributed within the fire-bed in a manner toassure effective combustion. To further support combustion I find it ofadvantage to provide the wall of the fire pot F with the downwardly andinwardly inclined air ports 11 in communication with the atmosphere anddelivering within the fire-pot.

My improved grate, as herein disclosed, is particularly adapted for usein connection with lignite, although it can be employed with the samefacility in connection with bituminous coal, and with the effect thatthe fuel burns with a blue flame and substantially of the characterobtained from anthracite coal. The inen'ibers M materially facilitatecombustion as the air discharged through the openings 8 and 10 isefiectively admixed with the gases generated from the fuel.

From the foregoing description, it is thought to be obvious that a grateconstructed in accordance with my invention is particularly well adaptedfor use by reason of the convenience and facility with which it may beassembled and operated, and it will also be obvious that my invention issusceptible of some change and modification without departing from theprinciples and spirit thereof and for this reason I do not wish to beundcrstod as limi 'ing myself to the precise arrangement and formationof the several parts herein shown in carrying out my invention inpractice eXcept as hereinafter claimed.

1 claim:

1. As a new article of manufacture, a

grate comprising a plate having diametrically opposed openings in itsmarginal portion, a second plate rotatabl} supported by the first namedplate, said second named plate substantially closing the openings in thefirst named plate when said second named plate is in one position, andan air feeding tubular member substantially in the form of an invertedU, the extremities of said member being secured to the second namedplate, said second named plate having openings in communication with thetubular member, the walls of said tubular member being perforated.

2. As a new article of manufacture, a grate comprising a plate havingdiametrically opposed openings in its marginal portion, a

second plate rotatably supported by the first named plate, said secondnamed plate substantially closing the openings in the first named platewhen said second named plate is in one position, and an air feedingtubular member substantially in the form of an inverted U, theextremities of said member being secured to the second named plate, saidsecond named plate hav ing openings in communication with the tubularmember, the walls of said tubular member being perforated, said secondnamed plate being provided with means for rotating the same.

3. As a new article of manufacture, a grate comprising a plate havingdiametrically opposed openings in its marginal portion, a second platerotatably supported by the first named plate, said second named platesubstantially closing the openings in the first tnamed plate when saidsecond named plate is in one position, and an air feeding tubular membersubstantially in the form of an inverted U, the extremities of saidmember being secured to the second named plate, said second named platehaving openings in communication with the tubular member, the walls ofsaid tubular member being perforated, the opentioned above the openingsin the first named plate when said second named plate is in a positionto substantially close the openings of the first named piste.

In testimony whereof I hereunto allix my signature in the presence oftwo witnesses.

WILLIAM J. RATEKIN.

Vvitnessesz A. P. GREY, FRANK JARVIS.

in 's in the second named olate bein oosi-

